all this happening as the hearings for mohammed and the other 9/11 co-conspirators begin at gitmo. >> there's a debate over how to finally close this prison. first, a new report from the government accountability office concluded all the detainees could be securely transported to the u.s. the report was commissioned by senator dianne feinstein and shows gitmo can safely close. the other came from a top lawyer at the pentagon who touched on one of the toughest questions in the war against al qaeda, will this ever end? >> there will come a tipping point, a tipping point at which so many of the leaders and operatives of al qaeda and its affiliates have been killed or captured, and the group is no longer able to attempt or launch a strategic attack against the united states. >> well, to be ready for when that time comes, the u.s. needs a fair attention system that can either convict detainees or set them free. guantanamo is over a decade old, but we're nowhere near ready for that. over 600 detainees have been released, according to human rights watch, another 166 still remain in cuba toda